APA (7th ed.) Zitazioa
Barker, M. (1992). Marketing strategy and management (2nd ed.). Macmillan.
Chicago Style (17th ed.) Zitazioa
Barker, Michael. Marketing Strategy and Management. 2nd ed. London: Macmillan, 1992.
MLA (9th ed.) Zitazioa
Barker, Michael. Marketing Strategy and Management. 2nd ed. Macmillan, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.